TY  - BOOK
AU  - Henry-Labordere,A.
TI  - Virtual roaming systems for GSM, GPRS, and UMTS: open connectivity in practice 
SN  - 9780470682623
U1  - 621.3821 
PY  - 2009///
CY  - Chichester, West Sussex, U.K. ;  Hoboken, NJ
PB  - John Wiley
KW  - Roaming (Telecommunication)
ER  -